Everything David says is a fact... I am waaaay fast. LOL.>>
What he says about the dust and track prep is correct. Dust is a problem on our offroad track, but this track I have never found it to be an issue, and in October it should be even less windy than now. A few minor corrections to what he said. My nova engine is an NS12S3 not the R version.
My first runs with my Mugen were definitely slower than My AE. Last week, I equalled my best AE quali run with my Mugen and went 2 laps more in the main with the Mugen. The X-12 is quite fast, but I don't know if it is any faster than my NS when my NS had good compression. I just put a MCP piston/sleeve in my NS (so I guess it is an R version now) and will try it soon.